Pumping unit



March 29', 1927. 1,622,694

I v w. w. WILLIAMS I PUMPING UNIT Filed July 25. 1-925 5 s uts-sh t 1WALTER WWILLIAMS E Y MW M ATTEIHNEY.

March 29,1927. 2,694

W. W. WILLIAMS PUMPING-"UNIT Filed July'25, 1925 s sheets-sheet)?Fiji-E- T0 BURNER g3 ANK 2.3- SUGTIONLINE I ALTER wJNiLLlAMs M d a W414,

ATTORNEY.

, 1 622 694 M rch 29, 1927. w w WILLIAMS PUMPING UNIT Filed July25;;1925 I 3 sheets-meet :5

'i w H 35 lznzzu'r DR.

WALTER W-WILLIAMS l u ll l ln l ll "UH l l l l I 'l l. II 1 i l llh E YM A'IIDFLNEY- Patented Mar. 29, 1927.

UNITED "STATES PATENT OFFICE.

WALTER w. WILLIAMS, or BLooMINeroN, ILLINoIs, nssrenon T WILLIAMS oIL-o-MATIC HEATING CORPORATION, or BLOOMINGTON, ILLINOIS, A CORPORATION OFILLINOIS.

Application filed July 25, 1925. Serial No. 45,978.

This invention relates to improvements in pumpin .units and moreparticularly to a self sea ing pump adapted to transport a liquid from asource of supply or storage tank to the place of use or consumpt1on.

While the most advantageous use of this improved pumping unit is setforth In describing this invention, it is to be understood that it isnot limited thereto, as it can be applied wherever its results aredesirable and obtainable without departing from the scope of theinvention.

Where a storage tank of liquid is at a distance and at a different levelfrom the place of use or-consumption, apumping unit that at all times isoperative to transport such liquid is most desirable. It is an object ofthis invention to provide such a device that is particularly adapted tosupply liquid fuel at a constant rate to a burner from a distant andprobably sub-surface storage tank during the o ration of the fuelburning mechanism. s such devices are usually controlled by a thermostator by the pressure or temperature generated by the heat from the burner,the operation of theburner mechanism is intermittent and the supply ofliquid fuel must be not only available immediately upon the starting ofthe operation 30 but also constant during such operation for asuccessful device of this character.

A preferred embodiment of this invention 18 illustrated upon theaccompanying sheets of drawing in which:

Figure 1 is a view in side elevation.

Figure 2 is a top plan view of Figure 1.

Figure 3 is a bottom plan view of the same. 7

Figure 4 is a view in horizontal section taken on the lines 4-4, Figure1, looking in the direction of the arrows.

Figure 5 is a view in vertical section taken on the line 5-5, Figure 2,looking inthe direction of arrows.

Figure 6 is a view in end elevation of Figure 1, with parts broken awayand looking from the left hand side.

The unit comprises two air tight chamhers I and 2, preferably havingcylindrical side walls '3 and 4 supported upon a common base 5 withseparate top closures 6 and 7 joined to the base by a plurality of rods8 holding the parts in air tight relation. The base is preferablymounted upon supports 9 with an electric motor 10 cen- '18 preferably ofsimilar v PUMPING UNIT.

trally secured on the under side thereof adapted to operate a rotary orother positively acting pump 11 also supported from I the under side ofthe base 5 having a suction line 12 from chamber 2 and a delivery 13 ntochamber 1. The suction line 12 is oined to a stand pipe 14 passingupward through the base 5 and extending within the chamber 2 to a shortdistancefrom the under side of the top closure 7 thereof. Another standpipe 15 of similar size and height is arranged in said chamber 2,passing out through the base, is joined to air; intake pipe 16 leadingto the source of liquid or storage tank unit shown. The delivery 13 ofthe pump is joined to-a stand pipe 17, preferably of similar size andheight to the others just described, passing upward through the base 5within the chamber 1 to a short distance from the under side of the topclosure 6 thereof. Another stand pipe size and height is arranged 1nsaid chamber 1, passing out through the base is joined to a pipe 19WhlCh actsas an over flow and preferably leads back to the storage tank.A discharge plpe 20 also leads from near the bottom of the chamber 1through the base and is jolned to a pipe 21 leading to the burner orother place of consumption. In the stand pipe 14, joined to the suctionline of the pump, a small opening 22 is provided near the bottom of thechamber 2, as shown in Figure 1, the purpose of which will be laterdescribed.

The motor 10 is controlled by a float opera'ted switch within thechamber 1 from which the liquid is delivered to the place ofconsumption. The commercial or other current is led by conduits 23 and24 to a junction box 25 preferably arranged upon the upper surface ofone of the chamber closures 6, from which extend flexible leads 26 tothe oles of the motor, one of the commercial eads is connected incircuit with the motor andthe other is in circuit'with one terminal ofthe top closure 60f the chamber 1 and having adjustable stops 30 and 31secured thereon above and below the float 27 adapted to be engaged bysaid float and moved vertically therewith. The lower end of theactuating rod pivotally engages a spring pressed switch operating lever32 the strength of which is suflicient to support the weight of the rodabove in the upper. or open position; The terminals of the switchleading from the junction box are preferably in the form of rods33 and34 having contacts at their lower ends which are closed through theoperating lever 32 by the de pression of the actuating rod 28 as thedown- I ward limit of the float is reached and o ened by the upwardmovement of the float lifting the rod, as can readily be seen fromFigures 5 and 6.

The operation of the unit is as follows: When the unit is first set upand connected to the storage tank through ipe 16 and burner through pipe20 and tili'e electrical connection made it is necessary for the firstand only time to prlme'the pump 11 for exhausting the air from the unitand intake pipe. As soon as the air is exhausted the liquidwill be drawnfrom the storage tank into chamber 2 of the unit which it enters as itover flows the top ofthe standpipe 15. The opening 22 in the stand pipe14 from the suction line 12 is of such size that as the height as theintake stand pipe 15 the chamber 2 is filled with the liquid before thenormal operation of the unit begins. The pump draws the liquid from thetop of chamber 2 and delivers it into chamber 1 through the deliverystand pipe 17until the level of the liquid therein causes the float 27to engage the stop 30 and lift the actuating rod 28 to operate theswitch to break the motor circuit.

During the normal operation of the burner the liquid is supplied fromthe bottom of chamber 1 to the burner nozzle through the discharge 21and delivery pipe 13. As the liquid is discharged from the chamber 1 itslevel subsiding the ball float engaging the lower stop on the actuatingrod 28 closes the motor circuit thereupon the pump will operate to fillthe chamber 1 from the other chamber 2 and continue to draw liquid fromthe storage tank into the chamber 2 until the'level of theliquid in thechamber 1 has raised the float therein to enga the upper stop on theactuating rod an broken the motor circuit. The overfiowstand pipe 18 isprovided in the chamber 1 as a safety outlet in case thefloat valveshould for any reason fail to break the motor circuit at the propertime.

It is seen that by this construction the chamber 2 is always filled withliquid and the Weight of which above the opening 22 in the suction standpipe '14 will always provide and maintain a liquid seal for the pump 11during the normal operation of the unit.

It is to be understood that the liquid from the chamber 1 is deliveredto the burner nozzle either by gravity or through a fuel supply meansoperating in conjunction wlth the other operating mechanism of theburner,

as the case may be. By this unit sufficient liquid fuel is always athand for the initial operation of the burner, which comes within thesafety fire regulation, and thereafter provides means for continuing thesupply thereto from the more distant source or main storage tank. Theprovision of the chamber 2 of the construction specified assures theconstant and instant operation of the pump whenever the level of theliquid in the chamber'l is lowered sufiiciently to op erate the floatvalve to close the motor circuit.

What I claim is:

1. A pumping unit for transporting and delivering liquid comprising twoenclosed chambers, a pumping element connected on opposite sides to therespective chambers, pipes in each chamber from the pumping elementextending adjacent the tops of said chambers, an intake pipe from thesource of liquid leading into the chamber communicating with the intakeside of the pumping element extending adjacent the top of said chamberand a delivery pipe leading from adjacent the bottom of the otherchamber, the pipe leading to the intake of the pumping element providedwith an opening adjacent the bottom on the interior of that chamberwhereby the liquid is allowed to pass into the pumping element and forma liquid seal therefor.

2. A pumping unit for transporting and delivering liquid comprising twoenclosed chambers. a pumping element connected on opposite sides to therespective chambers by pipes passing through the bottoms and terminatingadjacentthe tops of said chambers, an intake pipe from the source ofliquid leading through the bottom of the chamber communicating with theintake side of the pumping element and terminating adjacent the top 1thereof, a delivery pipe leading from adjacent the bottom of the otherchamber, meansin connection with the pipe leading to the intake side ofthe pump and interior of that chamber for forming a liquid seal for saidelement, an electric motor for operating said pumping element, a switchin the motor circaiit, and means controlled by the level of the liquidinthe discharge chamber for operating said switch.

3. A pumpin unit for'transportin and delivering liqui comprising intakean discnarge enclosed chambers, a pipe from the I source of fluidextending through the boting to the intake side of the tom of the intakechamber to adjacent the top thereof and a similar pipe leading fromadjacent the top of that chamber through the bottom to the intake sideof a pump disposed between the chambers whereby the liquid is-normallymaintained in that chamber to a height of the pipes, the pipe leadpumpprovided with a small opening adjacent the bottom of the chamber wherebythe column of liquid Within the chamber maintains a liquid seal for saidpump, a pipe leading from the discharge side of the pump to the interiorof the discharge chamber terminating near the top thereof and a similarpipe leading from adjacent said top through the bottom as an overflow, adelivery pipe leading from adjacent the bottom of said chamberstherethrough, an electric motor for operating the pump, a switch withinthe discharge chamber and in motor circuit, a float Within the dischargechamber operativcly connected with said switch to close the motorcircuit when the liquid Within that chamber reaches a predetermined lowlevel and to break the motor circuit when the said liquid reaches apredetermined high level Within the discharge chamber.

WALTER w. WILLIAMS.

